Hi it's been over 20 years since I had a fish tank. My dad gave me his 20 gallon tall tank. I'm 6 days into the cycle. Only one thing in the tank is a moss ball gravel substate and a few plastic plants and one silk. Ben testing water no real changes yet. A little amonia but not bad nitrites show 0 and nitrates show very little. Anything u can think I need to do with it?